减水剂对混凝土工程的良好作用日益为人们所了解。它的品种繁多,价格、最佳掺量、减水率各不相同。怎样从经济的角度选择减水剂呢?我们可以提出一个指标Q(每节约1公斤水泥,所需的减水剂的费用),Q=单价(元/公斤)×最佳掺量(水泥重的百分率)/减水率(百分率)。这公式可以采用NNO减水剂为例来论证。NNO减水剂单价 The good effect of water-reducing agents on concrete works is increasingly known. Its variety, the price, the best dosage, the water reduction rate varies. How can we choose a water reducer from an economic point of view? We can put forward an indicator Q (the cost of the water reducer needed for every kilogram of cement saved), Q = the unit price (yuan/kg) × the optimal amount (cement weight) Percentage)/Water Reduction (percentage). This formula can be demonstrated using the NNO water reducer as an example. NNO water reducer unit price